US4766056A - Light-sensitive material with compounds reactive with dye developers - Google Patents

Light-sensitive material with compounds reactive with dye developers Download PDF

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US4766056A
US4766056A US06/831,675 US83167586A US4766056A US 4766056 A US4766056 A US 4766056A US 83167586 A US83167586 A US 83167586A US 4766056 A US4766056 A US 4766056A
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group
dye
formula
light
compound
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Osamu Takahashi
Koichi Koyama
Keizo Koya
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Fujifilm Holdings Corp
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Fuji Photo Film Co Ltd
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Priority claimed from JP3349185A external-priority patent/JPS61193149A/ja
Priority claimed from JP6971685A external-priority patent/JPS61228443A/ja
Priority claimed from JP11614985A external-priority patent/JPS61273541A/ja
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Assigned to FUJI PHOTO FILM CO., LTD. reassignment FUJI PHOTO FILM CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KOYA, KEIZO, KOYAMA, KOICHI, TAKAHASHI, OSAMU
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds
    • G03C8/10—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors
    • G03C8/12—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors characterised by the releasing mechanism
    • G03C8/14—Oxidation of the chromogenic substances
    • G03C8/16—Oxidation of the chromogenic substances initially diffusible in alkaline environment
    • G03C8/18—Dye developers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/40—Development by heat ; Photo-thermographic processes
    • G03C8/4013—Development by heat ; Photo-thermographic processes using photothermographic silver salt systems, e.g. dry silver
    • G03C8/4033—Transferable dyes or precursors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/40—Development by heat ; Photo-thermographic processes
    • G03C8/4013—Development by heat ; Photo-thermographic processes using photothermographic silver salt systems, e.g. dry silver
    • G03C8/408—Additives or processing agents not provided for in groups G03C8/402 - G03C8/4046

Definitions

  • This invention relates to a color light-sensitive material and, more particularly, it relates to a color light-sensitive material using a dye developer.
  • Known photographic processes for obtaining a color positive image by using dye developers include the wet development process as disclosed in U.S. Pat. Nos. 2,983,606, 3,415,644, and 3,594,164, etc., and the heat development process as disclosed in Japanese Patent Application (OPI) No. 165054/84 (the term "OPI” as used herein means a "published unexamined patent application”). That is, when a light-sensitive element which has been imagewise exposed is developed with a dye developer, the dye developer is immobilized in the developed areas. The dye developer which remains mobile is then transferred to an image-receiving element to thereby form a positive image. It is believed that the dye developer is immobilized through formation of an oxidized product upon exposure to light and, thus, substantially inhibited from transferring.
  • dye developers i.e., compounds having a hydroquinone type developing agent moiety and a dye moiety in their molecule, include the wet development process as disclosed in U.S. Pat. Nos. 2,983,60
  • the above-described color photographic process using the dye developer is sometimes unsatisfactory in inhibition of transfer.
  • the highlight portion that should become white may have higher density than desired, i.e., a higher minimum density, thus undesirable poor color separation may occur.
  • U.S. Pat. No. 3,173,786 discloses that transfer of an oxidized product of a dye developer can be suppressed by using an onium compound.
  • the onium compound not only causes desensitization of a light-sensitive element, but also reduces image density, particularly in a process using heat development.
  • an object of this invention is to provide a color light-sensitive material which provides an image having a high image density and a sufficiently low minimum density, and which is excellent in color separation.
  • the above object of this invention can be achieved by a color light-sensitive material having at least a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A) described below, and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form.
  • a color light-sensitive material having at least a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A) described below, and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form.
  • the compound of formula (A) containing a color moiety is represented by formula (A) ##STR2## wherein R 1 , R 2 , and R 3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom; with proviso that at least one of R 1 , R 2 , and R 3 represents a hydrogen atom; X represents a chemical bond or a divalent linking group between the benzene ring and the Dye moiety; Dye represents an image-forming dye moiety; and G represents a hydroxyl group or a group capable of forming a hydroxyl group upon heating and/or by the action of a base.
  • the compound according to the present invention brings about great improvement in highlight areas of a transferred image, i.e., a reduced minimum density to remarkably improve discrimination.
  • a main cause of coloration in the minimum density area is that an oxidized product of a dye developer (i.e., quinone compound) that should naturally be immobile is further reacted with various additives or decomposition products of additives, e.g., bases, that are present in the film, to be partly converted to mobile compounds, which are then transferred to a dye-fixing layer.
  • a dye developer i.e., quinone compound
  • the compound according to the present invention preferentially undergoes reaction (probably an addition reaction) with an oxidized product of a dye developer than other additives, e.g., bases, to thereby convert the dye developer oxidized product to a compound that is substantially less mobile, and preferably a ballasted compound. As a result, the minimum density is effectively lowered.
  • the compounds having the above-described function include the compounds represented by formulae (I), (II), and (III), as described below.
  • Formula (I) is represented by
  • R 4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group
  • M represents a hydrogen atom, an ammonium ion, and a metal ion.
  • R 4 specifically includes a substituted or unsubstituted, straight chain or branched chain or cyclic alkyl group, e.g., a methyl group, an isobutyl group, a dodecyl group, an octadecyl group, etc., a substituted or unsubstituted aryl group, e.g., a phenyl group, a naphthyl group, etc., a substituted or unsubstituted heterocyclic group, preferably a 5- to 7-membered ring.
  • a substituted or unsubstituted, straight chain or branched chain or cyclic alkyl group e.g., a methyl group, an isobutyl group, a dodecyl group, an octadecyl group, etc.
  • a substituted or unsubstituted aryl group e.g., a phenyl group, a nap
  • the heterocyclic group may be a condensed bicyclic or a tricyclic ring which is formed with an aromatic ring such as a benzene ring, a naphthalene ring and the like.
  • heterocyclic group include a pyridyl group, a pyrazolyl group, a pyrazolotriazolyl group, a quinolyl group, etc.
  • the alkyl, aryl or heterocyclic moiety for R 4 may have substituents, e.g., a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an allyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, a sulfonyl group, etc. Two or more of these substituents may be present.
  • substituents e.g., a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an allyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group,
  • M in formula (I) represents a hydrogen atom, an ammonium ion, or a metal ion, e.g., Na + , K + , Mg 2+ .
  • M is a divalent or higher valent metal ion
  • the numbers of the SO 2 group and M are decided so that they are of the same charge.
  • One or more --SO 2 M groups may be present in the molecule, but a preferred number of --SO 2 M groups is 1 or 2.
  • A represents an atomic group forming a substituted or unsubstituted aromatic or heterocyclic ring condensed with the benzene ring
  • M represents a hydrogen atom, an ammonium ion, or a metal ion
  • l represents 1 or 2
  • m represents an integer of 1 or more.
  • the condensed aromatic or heterocyclic ring formed by A includes a naphthalene ring, a quinoline ring; an indole ring, a benzothiophene ring, and the like.
  • the aromatic or heterocyclic ring may have two or more substituents, such as a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc.
  • substituents such as a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc.
  • the compound represented by formula (I-a) is highly hydrophobic in order to efficiently immobilize an oxidized product of a dye developer, probably through addition reaction thereto. Therefore, the preferred among the compounds represented by the formula (I-a) are those in which the benzene ring or the aromatic or heterocyclic ring is substituted with a substituent or substituents, as recited above, having 3 or more total carbon atoms, and more preferably 6 or more total carbon atoms.
  • the compounds of formula (I) according to the present invention can easily be synthesized by known processes, as described, e.g., in S. R. Sandler and W. Karo, General Synthesis of Sulfinic Acids, Organic Functional Group Preparations, p. 519, Academic Press (1968).
  • Formula (II) is represented by ##STR5## wherein R 1 represents a hydrogen atom, an alkyl group, preferably a straight chain or branched chain or cyclic alkyl group such as a methyl group, an ethyl group, a t-butyl group, an amyl group, a cyclohexyl group, etc., an aryl group preferably having from 6 to 30 carbon atoms such as a phenyl group, a naphthyl group, etc., or a heterocyclic group, preferably a 5- to 7-membered ring.
  • R 1 represents a hydrogen atom, an alkyl group, preferably a straight chain or branched chain or cyclic alkyl group such as a methyl group, an ethyl group, a t-butyl group, an amyl group, a cyclohexyl group, etc., an aryl group preferably having from 6 to 30 carbon atoms such
  • the heterocyclic ring may be a condensed bicyclic or a tricyclic ring, and the condensed ring includes an aromatic ring such as a benzene ring, a naphthalene ring, and the like.
  • heterocyclic group include a pyridyl group, a pyrimidyl group, an indolyl group, an isoquinolyl group, etc.
  • the alkyl, aryl, or heterocyclic group may have substituents, such as a halogen atom, a nitro group, an amino group, a hydroxyl group, a carboxyl group, an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc. Two or more of these substituents may be present.
  • substituents such as a halogen atom, a nitro group, an amino group, a hydroxyl group, a carboxyl group, an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc. Two or more of these substituents may be present.
  • R 2 in formula (II) represents a hydrogen atom, preferably a chlorine atom and a bromine atom, an alkyl group, preferably a straight chain or branched chain alkyl group having from 1 to 20 carbon atoms, such as a methyl group, an ethyl group, a propyl group, an isopropyl group, etc., an aryl group preferably having from 6 to 30 carbon atoms, such as a phenyl group, a naphthyl group, etc., an acyloxy group, preferably having a substituted or unsubstituted alkyl group or an aryl group having from 1 to 30 carbon atoms, such as an acetoxy group, etc., or a sulfonyl group preferably having a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group having from 1 to 30 carbon atoms, such as a benzenesulfon
  • the alkyl or aryl group may be substituted, and examples of substituents include a halogen atom, a nitro group, an amino group, a hydroxyl group an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc.
  • R 3 of formula (II) represents a hydrogen atom or a group capable of being hydrolyzed such as ##STR6## wherein R 6 represents a hydrogen atom, a straight or branched chain alkyl group having from 1 to 20 carbon atoms, such as a methyl group, an ethyl group, a t-butyl group, a pentadecyl group, etc., an aryl group having from 6 to 30 carbon atoms, such as a phenyl group, a naphthyl group, etc., an acyl group having from 1 to 20 carbon atoms, such as a benzoyl group, a stearoyl group, etc., or an alkoxy group having from 1 to 20 carbon atoms, such as a methyl group, an ethoxy group, etc.
  • the alkyl group or aryl group for R 6 in formula (II) may be substituted, and examples of substituents include a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an aryl group, an allyl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc. Two or more of these substituents may be present.
  • R 5 in formula (II) represents a substituted or unsubstituted alkyl group having a straight chain, branched chain, or cyclic structure, such as a methyl group, an isobutyl group, a dodecyl group, an octadecyl group, etc., a substituted or unsubstituted aryl group, such as a phenyl group, a naphthyl group, etc., or a substituted or unsubstituted heterocyclic group, preferably a 5- to 7-membered heterocyclic ring.
  • the heterocyclic group may be a condensed bicyclo or a tricyclo ring, and the condensed ring includes an aromatic ring, such as a benzene ring, a naphthalene ring and the like, more specifically, e.g., a pyridine ring, a pyrazole ring, a pyrazolotriazole ring, a quinoline ring, etc.
  • aromatic ring such as a benzene ring, a naphthalene ring and the like, more specifically, e.g., a pyridine ring, a pyrazole ring, a pyrazolotriazole ring, a quinoline ring, etc.
  • the substituent for the alkyl moiety, aryl moiety, or heterocyclic moiety for R 5 includes a halogen atom, a nitro group, an amino group, a hydroxyl group, an alkyl group, a cycloalkyl group, an allyl group, an aryl group, an acyl group, an acylamino group, a carbamoyl group, a sulfamoyl group, an alkoxy group, etc. and may have two or more of such substituents.
  • the sulfinic acid compound released from the compound represented by formula (II) is highly hydrophobic in order to efficiently immobilize an oxidized product of a dye developer, probably through addition reaction thereto. Therefore, when R 5 in formula (II) is a benzene ring or an aromatic or heterocyclic ring, those preferred are substituted with a substituent or substituents, as recited above, having 3 or more total carbon atoms, and more preferably 6 or more total carbon atoms. When R 5 is an alkyl group, the preferred are substituted with a substituent or substituents having 6 or more total carbon atoms, including the above-described substituents.
  • Formula (III) is represented by ##STR9## wherein Y represents an aliphatic group of an aromatic group; Z represents an electron-attractive group; with the proviso that at least one of Y and Z contains a non-diffusing group having from 6 to 30 carbon atoms.
  • Y in the above-described formula (III) include a substituted or unsubstituted alkyl group and a substituted or unsubstituted aryl group.
  • substituents include an alkyl group, an alkoxy group, an acylamino group, and the like.
  • Z in formula (III) include a cyano group, a nitrile group, ##STR10## etc., wherein R 1 and R 2 each represents a hydrogen atom, a substituted or unsubstituted alkyl group having from 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having from 6 to 30 carbon atoms.
  • the substituents for R 1 or R 2 include an alkyl group, an alkoxy group, a halogen atom, an oxycarbonyl group, a cyano group, a carboxyl group, a sulfo group, an acylamino group, etc.
  • the compound can be used in widely ranging amounts, but, usually, in amounts ranging from 0.05 to 20 mols and preferably from 0.1 to 10 mols, per mole of a dye developer.
  • the compound according to the present invention can be incorporated in a light-sensitive coating by dissolving in a water-miscible organic solvent, e.g., methanol, ethanol, dimethylformamide, tetrahydrofuran, etc., either alone or in combination with water, and adding the solution to a light-sensitive coating composition.
  • a dissolution aid such as polyethylene type surface active agents, may be used.
  • Incorporation of the compound according to the present invention can also be carried out by dissolving in a sparingly water insoluble organic solvent, e.g., ethyl acetate, tricresyl phosphate, dibutyl phthalate, etc., emulsifying the solution, and adding the emulsion to a light-sensitive coating composition.
  • a sparingly water insoluble organic solvent e.g., ethyl acetate, tricresyl phosphate, dibutyl phthalate, etc.
  • the solution may be emulsified either individually or together with a dye developer.
  • the compound according to the present invention which contains both a ballast group and a hydrophobic group in the molecule, thereby has a surface active property and forms a micelle, e.g., the above-described compound III-16 through III-20, can be added to a light-sensitive coating by dissolving the compound in water, a water-miscible organic solvent, e.g., methanol, ethanol, dimethylformamide, tetrahydrofuran, or a mixture of water and the above-described organic solvent and the like.
  • a water-miscible organic solvent e.g., methanol, ethanol, dimethylformamide, tetrahydrofuran, or a mixture of water and the above-described organic solvent and the like.
  • the compound according to the present invention may be present in any layers constituting the light-sensitive material, but is preferably present in the layer containing the dye developer of formula (A).
  • R 1 , R 2 , and R 3 each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acylamino group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted arylthio group or a halogen atom; with proviso that at least one of R 1 , R 2 , and R 3 is a hydrogen atom;
  • G represents a hydroxyl group or a group capable of forming a hydroxyl group upon heating or by the action of a
  • the substituent for the alkyl moiety or aryl moiety for R 1 , R 2 , and R 3 includes an alkoxy group, a hydroxyl group, a halogen atom, a cyano group, an acyloxy group, an alkoxycarbonyl group, an acylamino group, a carbamoyl group, a substituted carbamoyl group, a sulfamoyl group, a substituted sulfamoyl group, an alkylsulfonylamino group, an arylsulfonylamino group, a ureido group, and a substituted ureido group.
  • R 1 , R 2 , and R 3 are selected from a hydrogen atom, an alkyl group having up to 4 carbon atoms, an alkoxy group having up to 4 carbon atoms, and an alkylthio group having up to 4 carbon atoms; and G is a hydroxyl group or a precursor thereof selected from trialkylsilyl ethers, carboxylic esters, carbonic esters, sulfonic ester, and phosphoric esters of a hydroxyl group.
  • X preferably represents a chemical bond or a linking group, such as an alkylene group, ##STR13##
  • Dyes which can be used for the image-forming dye moiety as represented by Dye include azo dyes, azo-methine dyes, anthraquinone dyes, naphthoquinone dyes, styryl dyes, nitro dyes, quinoline dyes, carbonyl dyes, phthalocyanine dyes, xanthene dyes, and the like, either chelated or nonchelated.
  • Image-forming dyes are required to have hues suited for color reproduction, to have high molecular extinction coefficients, to be stable against light, heat, and dye-releasing acids and other additives present in the system, and to be easy to synthesize. Examples of the preferred image-forming dyes satisfying these requirements are described in Japanese Patent Application (OPI) No. 165054/84.
  • a dye capable of forming a metal chelate may be used to form a chelate dye in a dye-fixing layer containing a metal salt (after-chelating).
  • Dyes of this type are described, for example, in U.S. Pat. Nos. 4,250,238, 4,346,155, 4,346,161, 4,357,410, 4,357,412, 4,419,435, 4,420,550, 4,407,931, and 4,436,799, Japanese Patent Application (OPI) Nos.
  • the dye developers of the present invention may be used in combination of two or more thereof.
  • two or more dye developers may be used to form a particular color, or to form a black color.
  • the dye developers of the present invention are preferably used in a total amount ranging from 10 mg to 15 g per m 2 , and more preferably from 15 mg to 5 g per m 2 .
  • the dye developers of this invention may be used either in the layer containing a silver halide emulsion or a layer adjacent to an emulsion layer.
  • a reducing agent is used, if desired.
  • the reducing agent is a so-called auxiliary silver salt developer and is capable of accelerating silver developement in co-operation with the dye developer.
  • Useful auxiliary developers include hydroquinone, alkyl-substituted hydroquinones, e.g., tert-butylhydroquinone, 2,5-dimethylhydroquinone, etc., catechols, pyrogallols, halogen-substituted hydroquinones, e.g., dichlorohydroquinone, etc., alkoxy-substituted hydroquinones, e.g., methoxyhydroquinone, etc., polyhydroxybenzene derivatives, e.g., methylhydroxynaphthalene, etc., and the like.
  • methyl gallate, ascorbic acid, ascorbic acid derivatives, hydroxylamines, e.g., N,N'-di-(2-ethoxyethyl)hydroxylamine, etc., pyrazolidones, e.g., 1-phenyl-3-pyrazolidone-4-methyl-4-hydroxymethyl-1-phenyl-3-pyrazolidone, etc., reductones, hydroxytetronic acid, and so on are also useful.
  • pyrazolidones are particularly advantageous in view of less stain and noticeable manifestation of the effects of the compounds of formula (I).
  • auxiliary developers may be precursors thereof that can be activated upon heating or by the action of a base.
  • the auxiliary developers are used in given concentrations. Preferred concentrations range from 0.0005 to 20 mols, and more preferably from 0.001 to 4 mols, per mol of silver.
  • the color light-sensitive material according to the present invention is preferably composed of a combination of a blue-sensitive emulsion layer, a green-sensitive emulsion layer, and a red-sensitive emulsion layer, or a combination of a green-sensitive emulsion layer, a red-sensitive emulsion layer, and an infrared-sensitive emulsion layer, each of these layers being combined with a yellow dye developer, a magenta dye developer and a cyan dye developer, respectively.
  • the term "infrared-sensitive emulsion layer” used herein means an emulsion layer sensitive to light having wavelengths of 700 nm or more, and particularly preferably 740 nm or more.
  • Silver halides which can be used in this invention include silver chloride, silver chlorobromide, silver chloroiodide, silver bromide, silver iodobromide, silver chloroiodobromide, silver iodide, and the like.
  • Such silver halides e.g., silver iodobromide
  • the silver halides may be mixtures of two or more kinds of silver halides having different sizes and/or silver halide compositions.
  • the silver halide grains to be used in this invention preferably have a mean grain size of from 0.001 to 10 ⁇ m, and more preferably from 0.001 to 5 ⁇ m.
  • silver halides may be employed as formed, but, if desired, may be chemically sensitized with chemical sensitizers, such as compounds of sulfur, selenium, tellurium, etc., and compounds of gold, platinum, palladium, rhodium, iridium, etc.; reducing materials, such as tin halides; or mixtures thereof.
  • chemical sensitizers such as compounds of sulfur, selenium, tellurium, etc., and compounds of gold, platinum, palladium, rhodium, iridium, etc.
  • reducing materials such as tin halides
  • the light-sensitive silver halide is generally suitable coated to a silver coverage of from 1 mg to 10 g per Ag/m 2 .
  • Silver halide can be spectrally sensitized to specific wavelength regions with sensitizing dyes.
  • Sensitizing dyes which can be used for spectral sensitization include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes, and hemioxonal dyes.
  • preferred are cyanine dyes, merocyanine dyes, and complex merocyanine dyes. Any of nuclei commonly employed for cyanine dyes as basic heterocyclic nuclei may be applied to these dyes.
  • sensitizing dyes may be used either individually or in combinations thereof. Combinations of sensitizing dyes are frequently used particularly for the purpose of supersensitization.
  • the silver halide emulsions may further contain, in combination with the sensitizing dyes, dyes which do not per se have spectral sensitizing activity, or substances which do not substantially absorb visible light, but which do show supersensitizing effects.
  • the color light-sensitive material according to the present invention can be applied to the so-called color diffusion transfer development using the developer at about room temperature and the heat-development by heating under a substantially non-water condition.
  • the color light-sensitive material may be a film unit in combination with dye-fixing material (the image receiving element).
  • the typical structure of the film unit is that the above-described image-receiving element and the light-sensitive element are coated on a transparent support and it is not required to peel the light-sensitive material from the image-receiving element after the formation of transferred images.
  • the image-receiving layer containing at least one mordant layer and a white reflective layer containing a solid pigment such as titanium oxide, etc. is provided between said mordant layer and the light-sensitive layer or the layer containing the dye providing material so that the transferred images can be seen through the transparent support.
  • the light-sensitive layer may be further provided between the white reflective layer and the light-sensitive layer so that development can be conducted in the bright room.
  • the peel-apart layer may be provided at the appropriate position so that all or a part of the light-sensitive layer can be peeled from the image-receiving layer, as described, e.g., in Japanese Patent Application (OPI) No. 67840/81 or Canadian Pat. No. 674,082.
  • OPI Japanese Patent Application
  • the above-described light-sensitive element is coated on a transparent support and thereon the white reflective layer, and further thereon the image-receiving layer is coated.
  • the film unit having the structure in which the light-sensitive element and the image-receiving element are coated on separate supports are classified into two large groups. One group includes those of the non-peel-apart type, and the other includes those of the peel-apart type.
  • One group includes those of the non-peel-apart type, and the other includes those of the peel-apart type.
  • the above-described film units are hereinafter described in detail.
  • the light reflective layer is provided on the back side of the support, and at least one image-receiving layer is coated on the surface of the support.
  • the light-sensitive element is coated on the support having the backing layer, and it is devised that the coated face of the light-sensitive layer is out of contact with the coated face of the mordant layer before conclusion of light exposure, but the light-sensitive layer is overturned to bring into contact with the coated face of the mordant layer after light exposure (e.g., during development).
  • the light-sensitive layer is quickly peeled from the image-receiving layer after the transferred images are formed at the mordant layer.
  • At least one mordant layer is coated on the transparent support and the light-sensitive layer is coated on the support having the transparent layer or the backing layer.
  • the coated face of the light-sensitive layer is provided contact with the coated face of the mordant layer.
  • the film units having an above-described structure are applied to both of the color diffusion transfer process and the heat-development.
  • the former may be conducted by using the container (the developable element) containing an alkaline developer, which is capable of rupturing under pressure.
  • the above-described developable element is preferably provided between the light-sensitive element and the cover sheets to be coated thereon.
  • the developable element is preferably provided between the light-sensitive element and the image-receiving element at the development at latest.
  • the developable element is preferred to contain a backing agent (e.g., a dye whose color changes dependent on carbon black or a pH value, etc.) and/or a white pigment (e.g., titanium oxide, etc.), according to the structure of the film unit.
  • a backing agent e.g., a dye whose color changes dependent on carbon black or a pH value, etc.
  • a white pigment e.g., titanium oxide, etc.
  • the film unit used for the color diffusion transfer process preferably has a structure comprising the combination of a neutralizing layer and a neutralization timing layer, which has a function of neutralization, and such is incorporated in the cover sheet, the image-receiving element, or the light-sensitive element.
  • the above-described developer component is not required and silver halide causes to react with the dye developer by heating after exposure (e.g., from about 80° to about 250° C.).
  • a silver organic salt is preferably used in combination.
  • Silver organic salts which can be used are those which react with the above-described image-forming material, or, if necessary, the reducing agent to be present with the image-forming material when heated up to 80° C. or more, preferably 100° C. or more, in the presence of exposed silver halide.
  • Examples of the above-mentioned organic silver salt oxidizing agent are those described, e.g., in Japanese Patent Application (OPI) No. 58543/83 and include silver salts of organic compounds having a carboxyl group, such as aliphatic carboxylic acids and aromatic carboxylic acids; silver salts of compounds having a mercapto group or a thione group or derivatives thereof; silver salts of compounds having an imino group; silver salts of benzotriazole or derivatives thereof, e.g., benzotriazole, alkyl-substituted benzotriazoles (e.g., methylbenzotriazole), halogen-substituted benzotriazoles (e.g., 5-chlorobenzotriazole), carboimidobenzotriazoles (e.g., butylcarboimidobenzotriazole), etc., as described in Japanese Patent Publication Nos.
  • organic metal salts such as copper stearate
  • silver salts described in Research Disclosure, RD No. 17029 (June 1978) and organic metal salts, such as copper stearate may also be used as organic metal salt oxidizing agents of the present invention.
  • the light-sensitive silver halide and organic silver salt are generally suitably used at a total silver coverage of from 50 mg/m 2 to 10 g/m 2 .
  • Binders which can be used in the present invention preferably include transparent or semi-transparent hydrophilic binders such as naturally-occurring substances, e.g., proteins (e.g., gelatin, gelatin derivatives, etc.) and polysaccharides (e.g., cellulose derivatives, starch, gum arabic, etc.); and synthetic polymers, such as water-soluble polyvinyl compounds, e.g., polyvinyl pyrrolidone, an acrylamide polymer, etc.
  • the synthetic polymers further include vinyl compounds dispersed in the form of a latex which are particularly effective to improve dimensional stability of photographic materials. These binders may be used individually or in combination of two or more thereof.
  • the light-sensitive materials according to the present invention can contain various compounds which activate development, and, at the same time, stabilize images.
  • Such compounds preferably include isothiuroniums, e.g., 2-hydroxyethylisothiuronium trichloroacetate, disclosed in U.S. Pat. No. 3,301,678; bis(isothiuronium) compounds, e.g., 1,8-(3,6-dioxaoctane)bis(isothiuronium trichloroacetate), disclosed in U.S. Pat. No. 3,669,670; thiol compounds disclosed in West German Patent Application (OLS) No.
  • isothiuroniums e.g., 2-hydroxyethylisothiuronium trichloroacetate, disclosed in U.S. Pat. No. 3,301,678
  • bis(isothiuronium) compounds e.g., 1,8-(3,6-dioxaoctan
  • thiazolium compounds e.g., 2-amino-2-thiazolium trichloroacetate, 2-amino-5-bromoethyl-2-thiazolium, etc., disclosed in U.S. Pat. No. 4,012,260; compounds having a 2-carboxycarboxyamido group as an acidic moiety, e.g., bis(2-amino-2-thiazolium)methylenebis(sulfonylacetate), 2-amino-2-thiazoliumphenyl sulfonylacetate, etc., disclosed in U.S. Pat. No. 4,060,420; and the like.
  • azole thioethers and blocked azolinethione compounds disclosed in Belgian Pat. No. 768,071; 4-aryl-1-carbamyl-2-tetrazoline-5-thione compounds described in U.S. Pat. No. 3,893,859; and the compounds described in U.S. Pat. Nos. 3,839,041, 3,844,788, and 3,877,940 can also be used to advantage.
  • the light-sensitive materials according to the present invention can further contain image-toning agents, if desired.
  • effective toning agents are 1,2,4-triazoles, 1H-tetrazoles, thiouracils and 1,3,4-thiadiazoles, etc.
  • preferred toning agents are 5-amino-1,3,4-thiadiazole-2-thiol, 3-mercapto-1,2,4-triazole, bis(dimethylcarbamyl)disulfide, 6-methylthiouracil, 1-phenyl-2-tetrazoline-5-thione, and so on.
  • Particularly effective toning agents are those which are capable of forming black images.
  • concentrations of the toning agent to be contained vary depending on the kinds of the heat developable light-sensitive material, processing conditions, the desired image and other factors, but, usually, ranges from about 0.001 to 0.1 mol per mole of silver in the light-sensitive material.
  • Examples of preferred bases are inorganic bases, such as hydroxides, secondary or tertiary phosphates, borates, carbonates, quinolinates and metaborates of alkali metals or alkaline earth metals, ammonium hydroxide, quaternary alkylammonium hydroxides, and hydroxides of other metals; and organic bases such as aliphatic amines, e.g., trialkylamines, hydroxylamines, aliphatic polyamines, etc., aromatic amines, e.g., N-alkyl substituted aromatic amines, N-hydroxylalkyl substituted aromatic amines, bis p-(dialkylamino)phenyl methanes, etc., heterocylic amines, amidines, cyclic amidines, guanidines, cyclic guanidines, etc. Of these, those having a pKa value of 8 or more are particularly preferred.
  • the base precursors which can be used preferably include components which undergo a reaction upon heating to release bases, such as salts between organic acids and bases which are heat decomposable by decarboxylation, compounds which are decomposable by intramolecular nucleophilic substitution, Lossen rearrangement, Beckmann rearrangement, etc., to release amines.
  • bases such as salts between organic acids and bases which are heat decomposable by decarboxylation, compounds which are decomposable by intramolecular nucleophilic substitution, Lossen rearrangement, Beckmann rearrangement, etc.
  • Preferred examples of these base precursors are salts of trichloroacetic acid described in British Pat. No. 998,949, salts of ⁇ -sulfonylacetic acid described in U.S. Pat. No. 4,060,420, salts of propiolic acid described in Japanese Patent Application (OPI) No. 180537/84, 2-carboxycarboxamide derivatives described in U.S. Pat.
  • base precursors which are particularly useful in this invention include guanidine trichloroacetate, methylguanidine trichloroacetate, potassium trichloroacetate, guanidine phenylsulfonylacetate, guanidine p-chlorophenylsulfonylacetate, guanidine p-methanesulfonylphenylsulfonylacetate.
  • potassium phenylpropiolate cesium phenylpropiolate, guanidine phenylpropiolate, guanidine p-chlorophenylpropiolate, guanidine 2,4-dichlorophenylpropiolate, diguanidine p-phenylene-bis-propiolate, tetramethylammonium, phenylsulfonylacetate, tetramethylammonium phenylpropiolate, and the like.
  • bases or base precursors can be used in widely ranging amounts, preferably not more than 50% by weight, and more preferably from 0.01 to 40% by weight, based on the dry coverage of the light-sensitive material.
  • the above-described components constituting the light-sensitive material of this invention may be present in any layers.
  • one or more components may be present in one or more layers of the light-sensitive material according to the particular intended use. It is desirable, in some cases, to incorporate the aforesaid reducing agent, image stabilizer and/or other additives in a protective layer in specific proportions. Such being the case, movement of the additives among layers can sometimes be minimized to advantage.
  • Generally employed supports include glass, paper, metal, and a like material as well as an acetyl cellulose film, a cellulose ester film, a polyvinyl acetal film, a polystyrene film, a polycarbonate film, a polyethylene terephthalate film, and related films or resinous materials.
  • Paper supports laminated with a polymer, e.g., polyethylene, may also be employed.
  • the polyester described in U.S. Pat. Nos. 3,634,089 and 3,725,070 are preferably used.
  • the photographic light-sensitive materials and dye-fixing materials according to the present invention may contain inorganic or organic hardeners in their photographic emulsion layers or other binder layers.
  • the inorganic or organic hardeners include chromium salts, e.g., chromium alum, chromium acetate, etc., aldehydes, e.g., formaldehyde, glyoxal, glutaraldehyde, etc., N-methylol compounds, e.g., dimethylolurea, methyloldimethylhydantoin, etc., dioxane derivatives, e.g., 2,3-dihydroxydioxane, etc., active vinyl compounds, e.g., 1,3,5-triacryloyl-hexahydro-s-triazine, 1,3-vinylsulfonyl-2-propanol, etc., active halogen compounds, e.g., 2,4
  • Dye transfer from the light-sensitive layer to a dye-fixing layer can be effected using a dye transfer aid.
  • Dye transfer aids which are supplied from the outside include water and a basic aqueous solution containing sodium hydroxide, potassium hydroxide or an inorganic alkali metal salt.
  • Low-boiling solvents e.g., methanol, N,N-dimethylformamide, acetone, diisobutyl ketone, etc., or mixed solvents of these low-boiling solvents and water or basic aqueous solutions may also be used.
  • An image-receiving layer may be wetted with these dye transfer aids.
  • the dye transfer aid is incorporated in the light-sensitive material or dye-fixing material, it is not necessary to supply the transfer aid from the outside.
  • the transfer aid can be incorporated in the material in the form of crystal water or microcapsules, or as a precursor which releases a solvent at high temperatures. It is preferable that a hydrophilic thermal solvent which is solid at room temperature but is liquefied at high temperatures is incorporated in the light-sensitive material and/or dye-fixing material.
  • the hydrophilic thermal solvent is incorporated in any of emulsion layers, intermediate layers, protective layers, and a dye-fixing layer, and preferably a dye-fixing layer and/or a layer adjacent thereto.
  • hydrophilic thermal solvent examples include ureas, pyridines, amides, sulfonamides, imides, alcohols, oximes, and other heterocyclic compounds.
  • additives which can be used in the light-sensitive materials according to the present invention include sulfamide derivatives, cationic compounds having a pyridinium group, etc., surface active agents having a polyethylene oxide chain, sensitizing dyes, anti-halation and anti-irradiation dyes, hardeners, mordants, and the like. Examples of these additives are described in European Pat. Nos. 76,492 and 66,282, West German Pat. No. 3,315,485 and Japanese Patent Application (OPI) Nos. 154445/84 and 152440/84.
  • Radiation including visible light can be used as a light source for imagewise exposure.
  • various light sources employed for usual color prints such as a tungsten lamp, a mercury lamp, a halogen lamp, e.g., an iodine lamp, an xenon lamp, laser beams, a cathode ray tube (CRT), a fluorescent tube, a light-emitting diode (LED), etc., can be used.
  • the heat-developable light-sensitive material is so designed that the light-sensitive layers being sensitive to these lights may release yellow, magenta, and cyan dyes, respectively. That is, the light-sensitive material is designed in such a way that the green-sensitive portion (layer) contains a yellow dye-donative material, the red-sensitive portion (layer) contains a magenta dye-donative material and the infrared-sensitive portion (layer) contains a cyan dye-donative material. It is noted, however, that the light emitting characteristics of LED, the spectral sensitivity characteristics of the light-sensitive material and the color-forming characteristics of the light-sensitive material are not limited to the above-described combination, and various other combinations can be employed.
  • the heat-developable light-sensitive material of the present invention can be exposed to light in accordance with the following processes.
  • One example is a contact printing process wherein an original, such as a line image (e.g., drawings) and a photographic image having gradation, is brought into intimate contact with the light-sensitive material.
  • Another example of exposure comprises processing electric signals of an image photographed with a video camera, etc., or an image transmitted from a TV station or image signals of an original obtained by reading using a receptor, e.g., a phototube or charge coupler device (CCD), and put in a memory device of an electronic computer, etc., if desired (the so-called image processing), forming an image by directly passing through CRT or FOT (fiber optics cathode ray tube) and printing the image on the heat-developable light-sensitive material in contact therewith or through a lens, as described in Japanese Patent Application (OPI) No. 148302/77.
  • CTR phototube or charge coupler device
  • Imagewise exposure can also be carried out by scanning according to the following techniques while controlling emission of a light source, e.g., an LED, a semi-conductor laser ray source, a modulating a laser beam, etc., by the above-described processed image signals:
  • a light source e.g., an LED, a semi-conductor laser ray source, a modulating a laser beam, etc.
  • a scanning process in which a light source, e.g., LED, semi-conductor laser, etc., is arranged on a disc rotor in its peripheral direction and the rotor is rotated while being moved in its axis of rotation, as described, e.g., in Japanese Patent Application (OPI) Nos. 151733/80 and 119960/82;
  • a light source e.g., LED, semi-conductor laser, etc.
  • a scanning process in which a light beam from a laser light source, etc., is oscillated by a polarizer, e.g., galvanomirror, a rotary polyhedral mirror, etc., and the light-sensitive material is moved a direction perpendicular to the direction of polarization.
  • a polarizer e.g., galvanomirror, a rotary polyhedral mirror, etc.
  • Exposure to light can also be carried out by applying image signals to a matrix or array liquid crystal to control light from a light source as described in Japanese Patent Application No. 142229/83.
  • Heat development can be carried out at a temperature of from about 50° C. to about 250° C., and preferably from about 80° C. to about 180° C. Transfer is effected at a temperature ranging from room temperature to the temperature employed for heat development, and preferably up to a temperature lower than the temperature employed for heat development by about 10° C.
  • Heating means which can be used in the development and transfer processes include a hot plate, an iron, a hot roller, a heating element using carbon, titanium white, etc., and the like.
  • Comparative Light-Sensitive Coating Materials A-1 and B-1 were prepared by coating the following layers on a polyethylene terephthalate film support in the order listed.
  • the Light-Sensitive Coating Material A-2 through A-5 and B-2 through B-5 according to the present invention were prepared in the same manner as for A-1 and B-1, respectively, except that the layer (1) further contained 0.72 g/m 2 of the compound of formula (I) as shown in Table 1.
  • Each of Light-Sensitive Materials A-1 to A-5 and B-1 to B-5 was imagewise exposed to light for 10 minutes using a tungsten lamp (2,000 lux) and then heated on a heat block at 140° C. for 20 seconds.
  • the above obtained dye-fixing material was dipped in water and brought into contact with each of the exposed samples in such a manner that the coating layers faced each other. After the laminate was heated on a heat block at 85° C. for 10 seconds, the dye-fixing material was stripped from the light-sensitive material.
  • Light-Sensitive Coating Material (2) was prepared in the same manner as for Comparative Light-Sensitive Material (1) except that the layers (1), (3), and (5) of Light-Sensitive Coating Material (2) each further contained 1.21 g/m 2 , 1.02 g/m 2 and 0.95 g/m 2 of Compound (I-3) of formula (I), respectively.
  • Each of Light-Sensitive Coating Materials (1) and (2) was imagewise exposed to light for 10 seconds using a tungsten lamp (2,000 lux) and then heated on a heat block at 140° C. for 40 seconds.
  • the same dye-fixing material as used in Example 1 was dipped in water and brought into contact with the exposed sample in such a manner that the coating layers faced each other. After the laminate was heated on a heat block at 85° C. for 15 seconds, the dye-fixing material was stripped from the light-sensitive material. There was obtained a positive dye image composed of yellow, magenta, and cyan dyes.
  • the resulting positive image was determined for densities by the use of a color densitometer. The results obtained are shown in Table 2 below.
  • the Light-Sensitive Coating Material C-2 through C-5 according to the present invention were prepared in the same manner as for C-1, respectively, except that the layer (1) further contained 2.6 mmol/m 2 of the compound of formula (II) as shown in Table 3.
  • a dye-fixing material was prepared in the following manner.
  • the mixture containing 6 g of guanidine carbonate, 16 ml of water, 20 g of a 10% gelatin, 4.8 ml of a 1% solution of sodium succinate 2-ethyl-hexyl ester sulfonic acid and 2 ml of a 2% solution of 2,4-dichloro-6-hydroxy-s-triazine was uniformly coated on the support in a layer of 30 ⁇ m in wet thickness. After drying, the resulting sample was used as a dye-fixing material having a mordant layer.
  • Each of the resulting samples C-1 to C-5 was imagewise exposed to light for 5 seconds using a tungsten lamp (2,000 lux).
  • Light-Sensitive Coating Material (4) was prepared in the same manner as for (3) except that the layers (1), (3), and (5) of Light-Sensitive Coating Material (4) each further contained 1.34 g/m 2 , 1.21 g/m 2 and 1.29 g/m 2 of Compound II-3 of the present invention, respectively.
  • Each of Light-Sensitive Coating Materials (3) and (4) was imagewise exposed to light for 10 seconds using a tungsten lamp (2,000 lux) and then heated on a heat block at 140° C. for 40 seconds.
  • the above-described dye-fixing material was dipped in water and brought into contact with the exposed sample in such a manner that the coating layers faced each other. After the laminate was heated on a heat block at 85° C. for 15 seconds, the dye-fixing material was stripped from the light-sensitive material. There was obtained a positive dye image composed of yellow, magenta, and cyan dyes.
  • the resulting positive image was determined for densities by the use of a color densitometer. The results obtained are shown in Table 4 below.
  • sample of this invention exhibits high discrimination for each dye image color, i.e., for the yellow, the magenta, and the cyan.
  • Comparative Samples D-2 and E-2 were prepared in the same manner as for D-1 and E-1, respectively, except that the layer (1) further contained 2.4 mmol/m 2 of a mobile dye having the following formula (II) disclosed in Japanese Patent Application (OPI) No. 40156/70. ##STR19##
  • Light-Sensitive Coating Materials D-3 to D-8 according to the present invention were prepared in the same manner as for D-1 except that the layer (1) further contained 2.4 mmol/m 2 of the compound of formula (III) as shown in Table 5.
  • Light-Sensitive Materials E-3 to E-8 according to the present invention were prepared in the same manner as for E-1 except that the layer (1) further contained 2.4 mmol/m 2 of the compound of formula (III) as shown in Table 5.
  • Each of Light-Sensitive Materials D-1 to D-8 and E-1 to E-8 was imagewise exposed to light for 10 seconds using a tungsten lamp (2,000 lux) and then heated on a heat block at 140° C. for 20 seconds.
  • the above obtained dye-fixing material was dipped in water and brought into contact with each of the exposed samples in such a manner that the coating layers faced each other. After the laminate was heated on a heat block at 85° C. for 10 seconds, the dye-fixing material was stripped from the light-sensitive material.
  • Light-Sensitive Coating Material (6) was prepared in the same manner as for Comparative Light-Sensitive Material (5) except that the layers (1), (3), and (5) of Light-Sensitive Coating Material (6) each contained 1.12 g/m 2 , 0.98 g/m 2 and 1.16 g/m 2 of Compound III-20 of formula (III), respectively.
  • Each of Light-Sensitive Coating Materials (5) and (6) was imagewise exposed to light for 10 seconds using a tungsten lamp (2,000 lux) and then heated on a heat block at 140° C. for 40 seconds.
  • the same dye-fixing material as used in Example 5 was dipped in water and brought into contact with the exposed sample in such a manner that the coating layers faced each other. After the laminate was heated on a heat block at 85° C. for 15 seconds, the dye-fixing material was stripped from the light-sensitive material. There was thus obtained a positive dye image composed of yellow, magenta, and cyan dyes.
  • the resulting positive image was determined for densities by the use of a color densitometer. The results obtained are shown in Table 6 below.

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US4957848A (en) * 1985-02-21 1990-09-18 Fuji Photo Film Co., Ltd. Heat developable color light-sensitive material with dye developers
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JP2604234B2 (ja) * 1989-06-26 1997-04-30 富士写真フイルム株式会社 拡散転写写真要素
US5270145A (en) * 1991-12-06 1993-12-14 Eastman Kodak Company Heat image separation system
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